Alternative ending for the Spaced-out and rocketry (project Noah's ark)

[evilcat19xx]

A massive spaceship that requires a working-research reactor to send all the dupes to the Temporal Tear.

We might add more requirements to the end-game: 

• We also need one from each critter and plant and their mutations in the rocket. 
• We need rare and expensive materials like diamond and Thermium to build the spaceship. 
• It could also need other resources, such as liquid oxygen and hydrogen. 
• We need artifacts from most planetoids to get the ancient data to build this rocket.

The goal is to use everything we learned in the game. 

Naturally, players build the research reactors in the end-game, and there is no need to do it at that time. The details of this could change, but the idea is to add more depth and reason to the end game.